terrestrial planet

(redirected from Silicate planet)
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Related to Silicate planet: Terrestrial planets

terrestrial planet

n.
Any of the four planets, Mercury, Venus, Earth, and Mars, whose orbits are closest to the sun. Also called inner planet.

in′ner plan′et


n.
any of the four planets closest to the sun: Mercury, Venus, Earth, or Mars.
[1950–55]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.terrestrial planet - a planet having a compact rocky surface like the Earth's; the four innermost planets in the solar system
major planet, planet - (astronomy) any of the nine large celestial bodies in the solar system that revolve around the sun and shine by reflected light; Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto in order of their proximity to the sun; viewed from the constellation Hercules, all the planets rotate around the sun in a counterclockwise direction
References in periodicals archive ?
Cutaway views show a carbon-based planet, possibly made mostly of silicon carbide, or carborundum, compared with the preponderance of oxygen-rich compounds in a silicate planet like Earth.
But last year Marc Kuchner (NASA/Goddard Space Flight Center) and Sara Seager (Carnegie Institution of Washington) presented models showing that silicate planets aren't the only possibility (S&T: May 2005, page 19).
Silicate planets regulate their internal thermal state through melting events in their mantles; through transport of these melts and entrained heat to their surfaces; through creation of new lithosphere; and through recycling of cold crust and lithosphere back into their hot convective interiors (e.